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Techwell Mixed Signal Semiconductor Solutions TECHWELL VIDEO DECODERS NTSC/PAL/SECAM Video Decoder for Portable Applications PRELIMINARY TW9910 Features Low Power NTSC/PAL/SECAM Video Decoder with VBI Slicer Target Applications Mobile Phone Portable Media Player Portable DVD player Picture in Picture (PIP) decoder DVD Recorder Video Decoder NTSC (M, 4.43) and PAL (B, D, G, H, I, M, N, N combination), PAL (60), SECAM support with automatic format detection Software selectable analog inputs allows any of the following combinations, e.g. 4 CVBS or ( 3 CVBS and 1 Y/C ). Built-in analog anti-aliasing filter Two 9-bit ADCs and analog clamping circuit Fully programmable static gain or automatic gain control for the Y channel Programmable white peak control for the Y channel Video Processing 4-H adaptive comb filter Y/C separation PAL delay line for color phase error correction Image enhancement with peaking and CTI Digital sub-carrier PLL for accurate color decoding Digital Horizontal PLL for synchronization processing and pixel sampling Advanced synchronization processing and sync detection for handling non-standard and weak signal Programmable hue, brightness, saturation, contrast, and sharpness Automatic color control and color killer Chroma IF compensation Detection of level of copy protection according to Macrovision standard The TW9910 is a low power NTSC/PAL/SECAM video decoder chip that is designed for portable applications. It consumes less than 100mW in typical composite input application. The available power down mode further reduces the power consumption. It uses the 1.8V for both analog and digital supply voltage and 3.3V for I/O power. A single 27MHz crystal is all that needed to decode all analog video standards. The video decoder decodes the base-band analog CVBS or S-video signals into digital 8 or 16-bit 4:2:2 YCbCr for output. It consists of analog frontend with input source selection, variable gain amplifier and analog-todigital converters, Y/C separation circuit, multi-standard color decoder (PAL BGHI, PAL M, PAL N, combination PAL N, NTSC M, NTSC 4.43 and SECAM) and synchronization circuitry. The Y/C separation is done with high quality adaptive 4H comb filter for reduced cross color and cross luminance. The advanced synchronization processing circuitry can produce stable pictures for non-standard signal as well as weak signal. A video scaler is provided to arbitrarily scale down the output video in a packed format. The output of the decoder is line-locked and formatted to the ITU-R 656 output with embedded sync. The TW9910 also includes circuits to detect and process vertical blanking interval (VBI) signal. It slices and process VBI data for output through video bus. Some information can also be alternatively retrieved through host interface. It also detects copy-protected signal according to Macrovision standard including AGC and colorstripe pulses. A 2-wire serial host interface is used to simplify system integration. All the functions can be controlled through this interface. Block Diagram NTSC/PAL SECAM 601/ 656 TV Tuner TW9910 Composite S-Video ll hwe Tec 9910 TW Techwell Mixed Signal Semiconductor Solutions www.techwellinc.com NTSC/PAL/SECAM Video Decoder for Portable Applications TW9910 PRELIMINARY Low Power NTSC/PAL/SECAM Video Decoder with VBI Slicer Line-lock clock Generator 27Mhz Clock Y Scaling / Video Interface V Luma/Chroma Processor 4H Adaptive Comb Filter MUX3 VD (15:8) U VD (7:0) HS VS CLKx2 Sync Processor AGC MUX1 MUX2 9-bit ADC MUX0 MUX Analog Video In CIN0 Chroma Demodulation 9-bit ADC VBI Slicer TW9910 Block Diagram MPOUT SCLK SDAT 2 Wire Serial Bus PDN Miscellaneous Two wire MPU serial bus interface Support Real Time Control interface Power save and Power down mode Typical power consumption < 100mW Single 27MHz crystal for all standards Supports 24.54MHz and 29.5MHz crystal for high resolution square pixel format decoding 3.3 V tolerant I/O 1.8V/3.3 V power supply 48-pin QFN or 44-pin LQFP package Video Output ITU-R 601 or ITU-R 656 compatible YCbCr(4:2:2) output format VBI slicer supporting industrial standard data services VBI data pass through, raw ADC data output Video Scaler High quality horizontal filtered scaling with arbitrary scale down ratio Phase accuracy better than 1/32 pixel Selectable anti-alias filter Vertical down scaling by line dropping About Techwell Techwell is a fabless semiconductor company that designs, markets and sells mixed signal integrated circuits for multiple digital video applications in the consumer, security surveillance and automotive markets, including advanced TVs, multifunction LCD monitors,DVD Recorders, security surveillance systems and in-car LCD displays. Founded in 1997,we currently have over 70 employees and are headquartered in San Jose,California, with additional R&D and sales activities in South Korea, Japan,Taiwan and China. Techwell Mixed Signal Semiconductor Solutions For more information on Techwell, please contact us at 1-408-435-3888 © 2006 Techwell Inc. All rights reserved. All other trademarks are property of their respective owners TECHWELL INC. TEL 1-408-435-3888 www.techwellinc.com